如何用Python确定CSV文件中每行的列数？

import csv

def get_column_count(csv_file):
    with open(csv_file, 'r') as file:
        reader = csv.reader(file)
        column_count = None
        for row in reader:
            if column_count is None:
                column_count = len(row)
            else:
                if len(row) != column_count:
                    raise ValueError("Inconsistent column count in CSV file")
    return column_count

csv_file = 'example.csv'
column_count = get_column_count(csv_file)
print(f"The CSV file '{csv_file}' has {column_count} columns.")